Hi Luciana! If Logan and/or Matthew answered your question, mind marking one or both of their responses as a "Good Answer" (down in the lower-right of the responses)? It helps us keep track of things, and it gives them a few extra MozPoints.

Yep! Sounds like that'd be the right thing to do. : Given the situation you'd probably be fine just resubmitting your XML sitemap—your main domain isn't changing; it's just getting a new subfolder—but I can't imagine it'd hurt.

I'd recommend opening in a new tab. Part of that is personal preference, but I can't see any case in which it's a good idea to move someone off your site in that situation.

I agree with Eric. No one source is going to give you a full picture of your link profile. Generally, OSE is best for measuring the overall strength of a full link profile, as many low-authority sites aren't indexed.

Also, keep in mind that there are a _lot _ of reasons that DA can go down, many of which have nothing at all to do with your specific link profile. That's why we recommend using it to benchmark against competitors rather than as an absolute score. Rand goes into more detail about that here:

DA/PA Fluctuations: How to Interpret, Apply, & Understand These ML-Based Scores

Hi Corporate_Communications! Did Gyorgy answer your question? If so, please mark his response as a "Good Answer." It'll give him some bonus MozPoints, and it helps us keep track of things.

Otherwise, what further questions do you have on this?

I have to agree on the link building suggestion. Often when I've heard folks complain about this issue it ends up being due to a dramatically stronger link profile for the home page. If you don't have relevant links pointing to the landing pages, it's quite likely the on-page optimization alone won't be enough.

Hi Tanveer! Just to make sure I'm understanding your question, are you asking whether our Keyword Difficulty Tool actually suggests low-competition (easy) keywords? It does not, but the difficulty score it returns for the keywords you analyze will also identify easy keywords. They'll just have a lower number.